I sitting here with a system which I have to determine the transfer function. The unit receives a velocity and position, and move towards that position with the given velocity. What kind of test would one perform for determining the transfer function...

I know matlab provides a method. the problem though I am bit confused on what kind of test is should perform, and how i should use Matlab to determining the transfer function. ?

The unit which is being used is a Flir PTU D48E

---> More about the system

The input for the system is pixel displacement of an object to the center of the frame.. The controller i am using now, converts pixel distances to angular distance multiplied with a kp.. which works fine .. but i can't seem to prove why that it works so well.. i mean I know servo motors cannot be modeled like that..

The controller is fed with angular displacement and its position now => added together give me angular position i have to go.. The angular displacement is used as the speed it has to move with.. since a huge displacement gives a huge velocity..

and by updating both element with different freq. i able to step down the velocity such that overshoot gets minimized..

The problem here is if I have to prove that the transfer function i found fits the system(plant) PTU I have to test somehow using the IDENT function i Matlab.. and I quite unsure how to do that.. And i am bit unsure on whether the PTU already has a controller within it => since i moves so well.. i mean its just simple math.. so it makes no sense that i can convert it like that..

I have a PTU system whose transfer function I need to determine. The unit receives a velocity and position, and move towards that position with the given velocity. What kind of test would one perform for determining the transfer function...

I know Matlab provides a method. The problem, though, is that I am bit confused on what kind of test I should perform, and how I should use Matlab to determine the transfer function.

The unit which is being used is a Flir PTU D48E

---> More about the system

The input to the system is pixel displacement of an object to the center of the frame. The controller I am using now converts pixel distances to angular distances multiplied by a gain $K_p$. This works fine. However, I can't seem to prove why that it works so well, I mean, I know servo motors cannot be modeled like that.

The controller is fed with angular displacement and its position now => added together give me angular position I have to go to. The angular displacement is used as the speed it has to move with, since a huge displacement gives a huge velocity.

By updating both elements at different frequency I'm able to step down the velocity such that the overshoot gets minimized.

The problem here is: if I have to prove that the transfer function I found fits the system, I have to do tests somehow using the ident function in Matlab, and I'm quite unsure how to do that. I'm also a bit unsure whether the PTU already has a controller within it, since it moves so well, I mean, it's just simple math, so it makes no sense that I'll convert it like that.

I sitting here with a system which I have to determine the transfer function. The unit receives a velocity and position, and move towards that position with the given velocity. What kind of test would one perform for determining the transfer function...

I know matlab provides a method. the problem though I am bit confused on what kind of test is should perform, and how i should use Matlab to determining the transfer function. ?

The unit which is being used is a Flir PTU D48E

---> More about the system

The input for the system is pixel displacement of an object to the center of the frame.. The controller i am using now, converts pixel distances to angular distance multiplied with a kp.. which works fine .. but i can't seem to prove why that it works so well.. i mean I know servo motors cannot be modeled like that..

The controller is fed with angular displacement and it position now => added together give me angular position i have to go.. The angular displacement is used as the speed it has to move with.. since a huge displacement gives a huge velocity..

and by updating both element with different freq. i able to step down the velocity such that overshoot gets minimized..

The problem here is if I have to prove that the transfer function i found fits the system(plant) PTU I have to test somehow using the IDENT function i Matlab.. and I quite unsure how to do that.. And i am bit unsure on whether the PTU already has a controller within it => since i moves so well.. i mean its just simple math.. so it makes no sense that i can convert it like that..

I sitting here with a system which I have to determine the transfer function. The unit receives a velocity and position, and move towards that position with the given velocity. What kind of test would one perform for determining the transfer function...

I know matlab provides a method. the problem though I am bit confused on what kind of test is should perform, and how i should use Matlab to determining the transfer function. ?

The unit which is being used is a Flir PTU D48E

---> More about the system

The input for the system is pixel displacement of an object to the center of the frame.. The controller i am using now, converts pixel distances to angular distance multiplied with a kp.. which works fine .. but i can't seem to prove why that it works so well.. i mean I know servo motors cannot be modeled like that..

The controller is fed with angular displacement and its position now => added together give me angular position i have to go.. The angular displacement is used as the speed it has to move with.. since a huge displacement gives a huge velocity..

and by updating both element with different freq. i able to step down the velocity such that overshoot gets minimized..

The problem here is if I have to prove that the transfer function i found fits the system(plant) PTU I have to test somehow using the IDENT function i Matlab.. and I quite unsure how to do that.. And i am bit unsure on whether the PTU already has a controller within it => since i moves so well.. i mean its just simple math.. so it makes no sense that i can convert it like that..

I sitting here with a system which I have to determine the transfer function. The unit receives a velocity and position, and move towards that position with the given velocity. What kind of test would one perform for determining the transfer function...

I know matlab provides a method. the problem though I am bit confused on what kind of test is should perform, and how i should use Matlab to determining the transfer function. ?

The unit which is being used is a Flir PTU D48E

The input for the system is pixel displacement of an object to the center of the frame.. The controller i am using now, converts pixel distances to angular distance multiplied with a kp.. which works fine .. but i can't seem to prove why that it works so well.. i mean I know servo motors cannot be modeled like that..

The controller is fed with angular displacement and it position now => added together give me angular position i have to go.. The angular displacement is used as the speed it has to move with.. since a huge displacement gives a huge velocity..

and by updating both element with different freq. i able to step down the velocity such that overshoot gets minimized..

The problem here is if I have to prove that the transfer function i found fits the system(plant) PTU I have to test somehow using the IDENT function i Matlab.. and I quite unsure how to do that.. And i am bit unsure on whether the PTU already has a controller within it => since i moves so well.. i mean its just simple math.. so it makes no sense that i can convert it like that..

I sitting here with a system which I have to determine the transfer function. The unit receives a velocity and position, and move towards that position with the given velocity. What kind of test would one perform for determining the transfer function...

I know matlab provides a method. the problem though I am bit confused on what kind of test is should perform, and how i should use Matlab to determining the transfer function. ?

The unit which is being used is a Flir PTU D48E

---> More about the system

The input for the system is pixel displacement of an object to the center of the frame.. The controller i am using now, converts pixel distances to angular distance multiplied with a kp.. which works fine .. but i can't seem to prove why that it works so well.. i mean I know servo motors cannot be modeled like that..

The controller is fed with angular displacement and it position now => added together give me angular position i have to go.. The angular displacement is used as the speed it has to move with.. since a huge displacement gives a huge velocity..

and by updating both element with different freq. i able to step down the velocity such that overshoot gets minimized..

The problem here is if I have to prove that the transfer function i found fits the system(plant) PTU I have to test somehow using the IDENT function i Matlab.. and I quite unsure how to do that.. And i am bit unsure on whether the PTU already has a controller within it => since i moves so well.. i mean its just simple math.. so it makes no sense that i can convert it like that..